Numerical Techniques for Underwater Topographic Measurement with GPS and Echo Sounder

Satoshi Iwakami, Masahiko Tamega, Shuji Jimbo, Masaji Watanabe

Abstract


This study demonstrates numerical techniques for a topographic study of a water area. Data obtained by a GPS unit and an echo sounder were combined, and three dimensional data were generated. A problem to find a surface that contains those data points was reformulated to a problem to find a piecewise linear continuous function defined over a triangular mesh. An iterative method led to an approximation of a fixed point. Those techniques are illustrated, and numerical examples are introduced.


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References


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DOI: https://doi.org/10.30645/ijistech.v3i1.37

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